Yes. The wireless charging treasure is divided into two parts, first of all, the first part is the part in contact with the mobile phone, he is composed of induction coil, he is close to the mobile phone, through the principle of electromagnetic induction from the induction charger to the mobile phone.
The second part is the other end of the wireless charging bank, which is to be inserted into the power supply, and this part is composed of a circuit. That is, the part that converts direct current into alternating current induction.